Live Value Slider
A styled range slider whose value updates live in a separate visual element.
Interactive Engineering Demo
A compact showcase of frontend polish, custom UI behavior, and multi-language backend logic.
This page collects small but useful interface patterns, custom JavaScript behaviors, and a stateless backend comparison feature built three different ways.
12 UI patterns
3 backend languages
No persistence
Frontend Interaction Gallery
A collection of custom JavaScript and CSS components showing polished interface behavior.
Stylized Radio Options
Radio inputs presented as selectable cards instead of default browser controls.
Selected mode
Focus Sprint
One tight implementation loop
Drag-and-Drop Priority Table
A table where rows can be reordered using drag and drop.
| Rank | Work item | Impact |
|---|---|---|
| 1 | Responsive audit | High |
| 2 | Keyboard states | High |
| 3 | Copy pass | Medium |
| 4 | Empty states | Medium |
| 5 | Motion tuning | Low |
Feature Flag Toggle Matrix
A grid of switches controlling mock product capabilities.
Enabled flags
Live Theme Picker
Controls that update CSS variables in real time.
Accent
Density
Radius
Live preview
Interface variables updated
Accent, spacing, and corner radius are applied immediately to this demo page.
Progress Stepper
A multi-step UI flow with next and back controls.
Searchable Filter Cards
A search input that filters cards instantly as the user types.
No matching cards.
Animated Stat Counters
Stat cards that animate from zero to their target value.
0
Interface states
0
Interaction demos
0
Backend languages
0
Stored records
Collapsible Code Panels
Accordion panels showing example HTML, CSS, and JavaScript snippets.
<button class="demo-primary-button">Run analysis</button>.demo-card { border: 1px solid var(--demo-border); }this.element.style.setProperty('--demo-accent', accent)Sortable Metric Cards
Metric cards that can be sorted by different values.
Latency
Coverage
Backlog
Risk
Defects
Adoption
Toast Notification Lab
Buttons trigger styled toast notifications.
Command Palette Mock
A lightweight command palette opened by a button or keyboard shortcut.
No command selected.
Same Feature, Three Languages
Paste a job description, choose Ruby, Rust, or Python, and compare how each implementation returns the same structured analysis without storing data or relying on background jobs.
Active endpoint
/demo/skill-extractor/ruby
The same feature is implemented separately in Ruby, Rust, and Python with one shared JSON contract.
Run the extractor to see technical skills, soft skills, seniority signals, keyword counts, and processing time.